Drawing-board attachment



1,585,397 J. LOYCANO DRAWING BOARD ATTACHMENT Flled June 25 1925 b {la-W a Zbzvwg May q Patented May 18, 1926.

UNITED STATES PATENT OFFICE.

JOHN LOYCANO, or BOSTON, MASSACHUSETTS.

DRAWING-BOARD ATTACHMENT.

Application filed June 25, 1925.

one edge of said table to produce a slanting inclination thereof. 7

My device is particularly adapted for use on drawing boards of the portable type, wherein the draftsman or person using the same must either do his drawing with the board flat, which results in greater discomfort, or get a slant thereto by placing objects, such as books or the like, under one edge of the board to incline it. So far as I am aware, there are no devices for satisfactorily operating, tilting, inclining, or slanting this type of drawing board.

An important object of my present invention, therefore, is to provide an attachment for drawing boards which may be operated to readily adjust the drawing board to the inclination most desirable to the operator.

A further object of my invention is to provide such a drawing board attachment which will be economical to manufacture, simple to attach and easy to operate, thus satisfying a long felt demand among draftsmen, students of mechanical drawing, and the like.

I so construct my novel attachment that when the person using the same has finished with the board for the time being, my attachment will still be left on the board, but will occupy very little space, and will in no wise be an objectionable addition thereto.

Further features of the invention, novel combinations of parts, and advantages, will be hereinafter more fully pointed out and claimed.

Referring to the drawings illustrating a preferred embodiment of my invention,

Fig. 1 is a perspective view illustrating a pair of my attachments in use on a drawing board;

Fig. 2 is a perspective, in enlarged detail, of one of my attachments;

lc iig. 3 is a top plan view of a modification; an

Fig. 4 is a side View of the device illustrated in Fig. 3.

As shown in the drawings, 1 designates a table, and 2 a drawing board to which a pair of my attachments are fitted. Since these attachments are identical, description of one will suffice for both.

Fig. 2 illustrates one form of my inven tion, comprising a body portion 3 provided with flanges 4, 4, the flanges 4, 4 being per- Serial No. 39,522.

forated to receive screws 5 for securing the attachment to a drawing board. The body 8 1s perforated at right angles to the line of attachment at 6,.to receive a rod 7, which rod is slidable through said perforation 6,

for adjustability. A Set screw 8 is tapped into the body 3 to bind upon the rod and hold it in any adjusted position desired. When the board is no longer desired to be used, the set screw 8 may be loosened, the rod 7 withdrawn, and I have provided a perforation 9, at right angles to the perforation 6, into which the rod 7 may be inserted and again locked in position by the set screw 8. When in this position the rod 7 will be inconspicuous, and out of the .way of the operator, and the board may be laid flat or set in any place desired, without injury to the attachment. The set screw 8 thus operates to hold the rod in position, regardless of whether the rod is in the perforation 6 or the perforation 9, thus greatly simplifying the device.

Figs. 3 and 4 illustrate a modification, wherein the bracket 10 is secured to the drawing board 2 by screws 11. Pivotally attached to the bracket 10 is a body portion 12, adapted to rotate therein, and having an aperture 13 therethrough to receive the rod 14. On the top of the bracket 10 are provided grooves 15 and 16, in which the rod 14 will rest, a set screw 17 tapped through the swivelled body 12 holding the rod 14 securely in position. advantage of this modification is that when An important the user is. temporarily through with the 15, Fig. 3, and permitting the rod 14 and swivelled body to assume the position shown in dottedilines in Fig. 3, thus placing the rod out of the way of the user. VVhen in this out-of-the-way position, the rod 14 will rest in the groove 16, whereupon the set screw 17 will again be tightened, thus securely hOldiIlg the same in position. On the bottom ends of both the rods 7 and 14 I provide atip 18, preferably of rubber or some such resilient and non-slipping material, so that the board 2 will have a firm bearing surface, and the attachment will not injure or mar the desk, table, or the like, on which it is used.

The operation of my present invention will be readily apparent. hen it is desired to use the drawing board, with the at-' tachments shown in Figs. 1 and 2, the rod 7 is inserted in the perforation 6, board raised to an inclination to suit the individual requirements of the user, set screw 8 tightened, and board is ready for use. hen it is no longer desired to use the board, the set screw 8 is loosened, the rod 7 withdrawn from the perforation 6 and inserted in the perforation 9, whereupon the setscrew is again tightened and the rod 7 held in position.

In using the modification shown in Figs. 3 and 4, the set screw 17 would be loosened, the rod l/l turned at right angles to the board, and the board likewise adjusted to the proper inclination, whereupon the set screw .17 would be tightened. When one is through with the board, the set screw 17 should be loosened the rod 14:, body 12 should be turned to the position shown in dotted lines in Fig. 3, and the set screw 17 again tightened.

I believe that a drawing board attachment of this kind, being compact in structure, nest in appearance, economical to manufacture, and simple to operate, is new, and I desire to claim both modifications shown herein broadly.

lVhile I have necessarily illustrated my present invention somewhat in detail, it will be appreciated that I may vary the size, shape, and arrangement of parts within reasonably wide limits without departing from the spirit of the invention.

It will also be appreciated that my novel attachments can be used on practically any size drawing board, and any number of the same used thereon. Although for practical purposes a pair of these attachments would be amply suflicient.

It will also be appreciated that my attachments may be utilized in conjunction with other devices than drawing boards, such as frames for making bead work, raflia work, or small hand looms, with equal facility.

My invention is further described and defined in the form of claims as follows 1. An attachment for drawing boards and the like, comprising a member adapted to be permanently secured to an edge of the board, and having perforations therethrough, one of said perforations at right angles with the plane of the board, and the other perforation in the plane of the board, a rod adapted to pass through said first perforation and act as a support for the board, and means to hold said rod in a desired position in said board.

'2. An attachment for drawing boards and the like, comprising member adapted to be pern'ianently secured to an edge of the board, and having perforations therethrough, one of said perforations at right angles with the plane of the board, and the other perforation in the plane of the board, a rod for supporting said board and adapted to pass through said first perforation, means to hole said rod in a desired position in said board, said rc-d'being removed from said first perforation and passed through said sec-0nd perforation, and held in position by said holding means, when the board is not in us 3.. An att 'chment for drawing boards and the like, comprising a member adapted to be ermanently secured .to an edge of the board, having perforations there-through, one said perforations at right angles with the anc of the board, and the other perforaion i are plane of the board, a rod for k 'd beard and adapted to pass h id first perforation, means to hold in a desired position in said board, .1 being removed from said first perticn and passed through said second oration, and held in position by said ,5 means, when the board is not in use, and non-slipping, non-marring means on one end of said rod.

.n attachment for drawing boards and e, comprising a member adapted to be ane-ntly secured to an edge of said board. perforation through said member at right angles to the plane of said board, a second perforation through said member in the plane of said board, a rod for supporting said board and having non-slipping, non marring means on one .end thereof, adapted to be adjustably pos tioned in said. first perforation when the board is in use, and pass through said second perforation when the board is not in use, and means to -e the rod in position in either of said orations.

In testimony whereof, I have signed my name to this specification.

JOHN LOYCANO. 

